My father was employed as a fitter at Deptford then Richborough power stations. I think he had an HND. Working on big stuff.
I doubt he had a HND in fitting though if he worked on electrics unless he was bolting down the genny’s, transformers & other auxiliaries (mechanical switchgear). I could be wrong, It has been known to happen!
I knew I could rely on you lot to let this thread slip in to complete nonsense, that's why I stick around, nutters